Evolve functionality for updating attack techniques

[nav6402]

Support:

• Getting attack data using stix2
• Improved flow (create copy of d3fend-protege.ttl, put all updates in copy, then ask user to manually compare before replacing)
• Adding new techniques to d3fend-protege.ttl
• Handling deprecated techniques -> (owl:deprecated true, rdfs:comment 'explanation for why deprecated')
• Handling revoked techniques -> (owl:deprecated true, rdfs:comment 'This technique was revoked by ...', rdfs:seeAlso technique revoked by)
• Alternative way to add techniques other than ./bin/robot
• Many test cases

Child issues:

• #77
• #137

[Peter Kaloroumakis]

works for me, tried a new ontology & website build.

Nice work!